Home / 28,168.32-38,871.18-15,592.80

Finding the Fourth Proportional to 28,168.32, 38,871.18 and 15,592.80

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Solution

The fourth proportional to 28,168.32, 38,871.18 and 15,592.80 is: 21,517.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,168.32 : 38,871.18 = 15,592.80 : x
  2. Step 2: Convert to fraction form
    28,168.32/38,871.18 = 15,592.80/x
  3. Step 3: Cross multiply
    28,168.32x = 38,871.18 × 15,592.80
  4. Step 4: Simplify right side
    28,168.32x = 606,110,535.50
  5. Step 5: Solve for x
    x = 606,110,535.50/28,168.32
  6. Step 6: Final answer
    x = 21,517.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.